# `io.github.rgejman/simplelabtools-labels` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.github.rgejman/simplelabtools-labels
- JSON: https://anlyon.dev/api/v1/servers/io.github.rgejman/simplelabtools-labels
- Version: 1.0.0 (active)
- Publisher: io.github.rgejman (GitHub account)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/rgejman/simplelabtools
- Metadata from the official MCP Registry, synced 2026-10-21T18:46:06.212Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Simple Lab Tools Label Maker
Create printable cryogenic lab, sample, tube and QR label sheets. Six templates; free, no login.
```

Scanned 2026-10-21T19:26:45.511Z over streamable-http.

**2 tools: 1 change things and 1 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 1 | ask |
| Only reads | read | 1 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | none |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | none |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

- **warn** Annotations that disagree with the tool in `create_label_sheet` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "create_label_sheet" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "create_label_sheet" says "create": a word for a change.
```


## Changes things (1)

Creates or changes something that can be changed back. Claude Code: ask.

### `create_label_sheet`

- The name "create_label_sheet" says "create": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Create one printable sheet and editable share link from plain label text. Does not submit a physical print job or save account data. Returns printUrl, editUrl, and importable sheet JSON. Rejects overflow. Positions are 1-based, row-major; copies repeats each label consecutively. Use empty strings for blank slots.
```

## Only reads (1)

Looks things up and changes nothing. Claude Code: allow.

### `list_label_templates`

- The name "list_label_templates" says "list": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
List supported physical label templates, dimensions in inches, capacity, and placement geometry. Match the user's label stock before creating a sheet.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `simplelabtools-labels`:

```json
{
  "permissions": {
    "allow": [
      "mcp__simplelabtools-labels__list_label_templates"
    ],
    "ask": [
      "mcp__simplelabtools-labels__create_label_sheet"
    ],
    "deny": []
  }
}
```

## Remote posture

What an anonymous client saw at the remote endpoint, last 2026-10-22T15:04:49.922Z, unchanged since 2026-10-22T15:04:49.922Z. No credentials were sent and no tool was called. Values are shown as the endpoint returned them. Method: https://anlyon.dev/methodology#remote-posture

| Fact | Observed |
| --- | --- |
| Reachable | `yes` |
| HTTP status of an anonymous initialize | `200` |
| tools/list served without credentials | `yes` |
| Tools that change things, listed without credentials | `1` |
| Protocol version | `2025-06-18` |
| WWW-Authenticate on 401 | `not observed` |
| resource_metadata in WWW-Authenticate | `none` |
| RFC 9728 protected resource metadata | `none` |
| Authorization servers | `none` |
| Legacy HTTP+SSE transport | `no` |
| Dynamic client registration | `not observed` |
| Client ID metadata documents | `not observed` |

- **warn** Tools that change things, listed to anyone ([unauth-remote-writes](https://anlyon.dev/methodology#unauth-remote-writes))

```untrusted-server-text
The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.

https://simplelabtools.com/mcp: tools/list returned 2 tools to an anonymous client, including create_label_sheet (write)
```